如何创建自定义Angular Material模块？(材料v2.0.0-beta.3)

Question

我曾经将Material库导入到基础模块app.module.ts中,但Angular Material v2.0.0-beta.3不推荐使用Material模块.根据更改日志(https://github.com/angular/material2/blob/master/CHANGELOG.md),您现在应该创建一个导入单个Material组件的自定义模块.我无法做到这一点.

这种方法:

@NgModule({
    declarations: [ MdInputModule ],
    imports: [
        CommonModule,
        MdInputModule
    ],
    exports: [ MdInputModule ]
})

export class FooMaterialModule {}

导致此错误:

未捕获错误:模块'FooMaterialModule'声明的意外模块'MdInputModule'.请添加@ Pipe/@ Directive/@ Component注释.

如何为Angular Material库创建自定义模块？

Answer 1

您的自定义Angular Material模块可以镜像已弃用的材料模块.

如更改日志所示,您需要注释掉应用程序未使用的Material组件.

我们发现,在世界上目前的树状态下,使用像MaterialModule这样的聚合NgModule会导致工具无法消除未使用的组件的代码.

为了确保用户尽可能使用最小的代码大小,我们不推荐使用MaterialModule,以便在后续版本中删除.

要替换MaterialModule,用户可以在其应用程序(例如,GmailMaterialModule)中创建自己的"材料"模块,该模块仅导入应用程序中实际使用的组件集.

我-material.module.ts

import {NgModule} from '@angular/core';
import {A11yModule} from '@angular/cdk/a11y';
import {DragDropModule} from '@angular/cdk/drag-drop';
import {PortalModule} from '@angular/cdk/portal';
import {ScrollingModule} from '@angular/cdk/scrolling';
import {CdkStepperModule} from '@angular/cdk/stepper';
import {CdkTableModule} from '@angular/cdk/table';
import {CdkTreeModule} from '@angular/cdk/tree';
import {MatAutocompleteModule} from '@angular/material/autocomplete';
import {MatBadgeModule} from '@angular/material/badge';
import {MatBottomSheetModule} from '@angular/material/bottom-sheet';
import {MatButtonModule} from '@angular/material/button';
import {MatButtonToggleModule} from '@angular/material/button-toggle';
import {MatCardModule} from '@angular/material/card';
import {MatCheckboxModule} from '@angular/material/checkbox';
import {MatChipsModule} from '@angular/material/chips';
import {MatStepperModule} from '@angular/material/stepper';
import {MatDatepickerModule} from '@angular/material/datepicker';
import {MatDialogModule} from '@angular/material/dialog';
import {MatDividerModule} from '@angular/material/divider';
import {MatExpansionModule} from '@angular/material/expansion';
import {MatGridListModule} from '@angular/material/grid-list';
import {MatIconModule} from '@angular/material/icon';
import {MatInputModule} from '@angular/material/input';
import {MatListModule} from '@angular/material/list';
import {MatMenuModule} from '@angular/material/menu';
import {MatNativeDateModule, MatRippleModule} from '@angular/material/core';
import {MatPaginatorModule} from '@angular/material/paginator';
import {MatProgressBarModule} from '@angular/material/progress-bar';
import {MatProgressSpinnerModule} from '@angular/material/progress-spinner';
import {MatRadioModule} from '@angular/material/radio';
import {MatSelectModule} from '@angular/material/select';
import {MatSidenavModule} from '@angular/material/sidenav';
import {MatSliderModule} from '@angular/material/slider';
import {MatSlideToggleModule} from '@angular/material/slide-toggle';
import {MatSnackBarModule} from '@angular/material/snack-bar';
import {MatSortModule} from '@angular/material/sort';
import {MatTableModule} from '@angular/material/table';
import {MatTabsModule} from '@angular/material/tabs';
import {MatToolbarModule} from '@angular/material/toolbar';
import {MatTooltipModule} from '@angular/material/tooltip';
import {MatTreeModule} from '@angular/material/tree';

@NgModule({
  exports: [
    A11yModule,
    CdkStepperModule,
    CdkTableModule,
    CdkTreeModule,
    DragDropModule,
    MatAutocompleteModule,
    MatBadgeModule,
    MatBottomSheetModule,
    MatButtonModule,
    MatButtonToggleModule,
    MatCardModule,
    MatCheckboxModule,
    MatChipsModule,
    MatStepperModule,
    MatDatepickerModule,
    MatDialogModule,
    MatDividerModule,
    MatExpansionModule,
    MatGridListModule,
    MatIconModule,
    MatInputModule,
    MatListModule,
    MatMenuModule,
    MatNativeDateModule,
    MatPaginatorModule,
    MatProgressBarModule,
    MatProgressSpinnerModule,
    MatRadioModule,
    MatRippleModule,
    MatSelectModule,
    MatSidenavModule,
    MatSliderModule,
    MatSlideToggleModule,
    MatSnackBarModule,
    MatSortModule,
    MatTableModule,
    MatTabsModule,
    MatToolbarModule,
    MatTooltipModule,
    MatTreeModule,
    PortalModule,
    ScrollingModule,
  ]
})
export class MyMaterialModule {}

app.module.ts

import { AppComponent } from './app.component';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { BrowserModule } from '@angular/platform-browser';

...

import { MyMaterialModule } from './my-material.module';


@NgModule({
  declarations: [ AppComponent ],
  imports: [
    BrowserAnimationsModule,
    BrowserModule,

    ...

    MyMaterialModule
    ],
  providers: [],
  bootstrap: [ AppComponent ]

})

export class AppModule { }